5051 to 5100 MCQs for Lab Technician and Technologist Exam Preparation
5000 Plus MCQs for Lab Technician and Technologists are designed to test the knowledge and proficiency of laboratory professionals who work in the field of clinical laboratory science. These questions cover a wide range of topics related to laboratory science, including anatomy, physiology, microbiology, chemistry, and hematology.
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Questions 5051 to 5100
- Two amino groups are present in
- Leucine
- Glutamate
- Lysine✔
- Threonine
- During denaturation of proteins, all of the following are disrupted except
- Primary structure✔
- Secondary structure
- Tertiary structure
- Quaternary structure
- All the following are branched chain amino acids except
- Isoleucine
- Alanine✔
- Leucine
- Valine
- An –OH group is present in the side chain of
- Serine✔
- Arginine
- Lysine
- Proline
- Edman’s reagent contains
- Phenylisothiocyanate✔
- 1-Fluoro-2, 4-dinitrobenzene
- Dansyl Chloride
- tBOC azide
- Edman’s reaction can be used to
- Determine the number of tyrosine residues in a protein
- Determine the number of aromatic amino acid residues in a protein
- Determine the amino acid sequence of a protein✔
- Hydrolyse the peptide bonds in a protein
- Inherited deficiency of β−glucosidase causes
- Tay-Sachs disease
- Metachromatic leukodystrophy
- Gaucher’s disease✔
- Multiple sclerosis
- Tay-Sachs disease results from inherited deficiency of
- Arylsulphatase A
- Hexosaminidase A✔
- Sphingomyelinase
- Ceramidase
- The largest alpolipoprotein is
- Apo E
- Apo B-48
- Apo B-100✔
- Apo A-I
- Apolipoprotein B-100 is synthesised in
- Adipose tissue
- Liver✔
- Intestine
- Liver and intestine
- Apolipoprotein B-48 is synthesized in
- Adipose tissue
- Liver
- Intestine✔
- Liver and intestine
- Apolipoproteins A-I and A-II are present in
- LDL only✔
- LDL and VLDL
- HDL only
- HDL and chylomicrons
- Apolipoprotein B-48 is present in
- Chylomicrons✔
- VLDL
- LDL
- HDL
- Apolipoprotein B-100 is present in
- Chylomicrons
- VLDL only
- LDL only
- VLDL and LDL✔
- Apolipoproteins C-I, C-II and C-III are present in
- Chylomicrons
- VLDL
- HDL
- All of these✔
- Apolipoprotiens C-I, C-II and C-III are present in all of the following except
- Chylomicrons
- VLDL
- LDL✔
- HDL
- Apolipoprotein A-I acts as
- Enzyme activator
- Ligand for receptor
- Both (Enzyme activator) and (Ligand for receptor)✔
- None of these
- Apolipoprotien B-100 acts as
- Enzyme activator
- Ligand for receptor✔
- Both (Enzyme activator ) and (Ligand for receptor)
- None of these
- Apolipoprotein C-II is an activator of
- Lecithin cholesterola acyl transferase
- Phospholipase C
- Extrahepatic lipoprotein lipase✔
- Hepatic lipoprotein lipase
- Nascent chylomicron receives apolipoproteins C and E from
- VLDL remnant
- VLDL
- LDL
- HDL✔
- Terminal transferase
- Removes nucleotides from 3’ end
- Adds nucleotides at 3’ end✔
- Removes nucleotides from 3’end
- Adds nucleotides at 3’end
- S1 nuclease hydrolyses
- DNA of somatic cells
- DNA of sperms
- Any double stranded DNA
- Any single stranded DNA✔
- Positive nitrogen balance is seen in
- Starvation
- Wasting diseases
- Growing age✔
- Intestinal malabsorption
- Alanine can be synthesized from
- Glutamate and α-ketoglutarate
- Pyruvate and glutamate✔
- Pyruvate and α-ketoglutarate
- Asparate and α-ketoglutarate
- All of the following are required for synthesis of alanine except
- Pyruvate
- α-ketoglutarate✔
- Glutamate
- Pyridoxal phosphate
- All of the following statements about aspartate are true except
- It is non-essential amino acid
- It is a dicarboxylic amino acid
- It can be synthesized from pyruvate and glutamate✔
- It can be converted into asparagine
- Glycine can be synthesized from
- Serine
- Choline
- Betaine
- All of these✔
- All of the following are required for synthesis of glutamine except
- Glutamate
- Ammonia
- Pyridoxal phosphate✔
- ATP
- A coenzyme required for the synthesis of glycine from serine is
- ATP
- Pyridoxal phosphate
- Tetrahydrofolate✔
- NAD
- All of the following statements about proline are true except
- It is an imino acid
- It can be synthesized from glutamate
- It can be catabolised to glutamate
- Free proline can be hydroxylated to hydroxyproline✔
- A protein rich in hydroxyproline is
- Prolamin
- Procollagen
- Collagen✔
- Proinsulin
- All the following statement about hydroxyproline are true except
- There is no codon for hydroxyproline
- It is present in large amounts in collagen
- Free proline cannot be hydroxylated to hydroxyproline✔
- Hydroxylation of proline residues is catalysed by a dioxygenase
- All of the following are required for hydroxylation of proline residues except
- Ascorbic acid
- Glutamate✔
- Ferrous ions
- Molecular oxygen
- Cysteine can be synthesized from methionine and
- Serine
- Homoserine
- Homocysteine✔
- Threonine
- Methionine is synthesized in human body from
- Cysteine and homoserine
- Homocysteine and serine
- Cysteine and serine
- None of these✔
- Hydroxylation of phenylalanine requires all of the following except
- Phenylalanine hydroxylase
- Tetrahydrobiopterin
- NADH✔
- Molecular oxygen
- Non-Protein amino acids are
- Ornithine
- β-alanine
- γ-amino butyric acid
- All of these✔
- The amino acid that undergoes oxidative deamination at significant rate is
- Alanine
- Aspartate
- Glutamate✔
- Glutamine
- Allosteric inhibitor of glutamate dehydrogenase is
- ATP✔
- ADP
- AMP
- GMP
- Allsoteric activator of glutamate dehydrogenase is
- ATP
- GTP
- ADP and GDP✔
- AMP and GMP
- Free ammonia is released during
- Oxidative deamination of glutamate
- Catabolism of purines
- Catabolism of pyrimidines
- All of these✔
- An organ which is extremely sensitive to ammonia toxicity is
- Liver
- Brain✔
- Kidney
- Heart
- Ammonia is transported from muscles to liver mainly in the form of
- Free ammonia
- Glutamine
- Asparagine
- Alanine✔
- The major site of urea synthesis is
- Brain
- Kidneys
- Liver✔
- Muscles
- Carbamoyl phosphate required for urea synthesis is formed in
- Cytosol
- Mitochondria✔
- Both ( Cytosol ) and (Mitochondria)
- None of these
- Daily excretion of nitrogen by an adult man is about
- 15–20 mg
- 1.5–2 gm
- 5–10 gm✔
- 15–20 gm
- Maple syrup urine diseases is an inborn error of metabolism of
- Sulphur-containing amino acids
- Aromatic amino acids
- Branched chain amino acids✔
- Dicarboxylic amino acids
- Cystinuria results from inability to
- Metabolise cysteine
- Convert cystine into cysteine
- Incorporate cysteine into proteins
- Reabsorb cystine in renal tubules✔
- The defective enzyme in histidinemia is
- Histidine carboxylase
- Histidine decarboxylase
- Histidase✔
- Histidine oxidase
- All the following statements about phenylketonuria are correct except
- Phenylalanine cannot be converted into tyrosine
- Urinary excretion of phenylpyruvate and phenyllactate is increased
- It can be controlled by giving a lowphenylalanine diet
- It leads to decreased synthesis of thyroid hormones, catecholamines and melanin✔
The questions are typically designed to assess the technical skills and knowledge required for the laboratory profession, including the ability to analyze laboratory test results, perform laboratory procedures, and maintain laboratory equipment.
To prepare for these MCQs, candidates should have a thorough understanding of the key concepts and principles of laboratory science. They should also be familiar with common laboratory equipment and procedures, as well as laboratory safety protocols.
Candidates may also benefit from studying specific laboratory science textbooks or taking online courses that cover the material tested in the MCQs. Additionally, practicing sample MCQs and reviewing the answers can help candidates identify areas where they may need to improve their knowledge or skills.
Overall, the MCQs for lab technologists are designed to be challenging and comprehensive, requiring candidates to demonstrate a high level of proficiency in the field of laboratory science.
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